Few Stuff About Male Ninjas. I will not go deep into them but just a short review. They all have awesome RHs, can counter even Baraka's JK and JP, good HK and LK, and not bad jabs:
Reptile
He is the worst, thats obvious. He is slow and predictable. The Slide is good for wake ups, but can be easy punished. The Forceball could be a great move if it hadnt so much startup and if it wasnt so slow. Still you can try crouch punch - uppercut or RH-HK mid screen if you catch someone. The Acid Spit takes a little damage but its somehow fast and usefull against jumpers sometimes. Easy Punishable too. You can try to combine both acid spit and forceball against turtles with no transport moves or freeze. The Invisiblity can be tricky if you know what you are doing.
Although he has tons of infinites, they are not usefull.
Sub-Zero
Better than Reptile. The Slide can be used like wake up again. He has good tactics with Jabs-Ground Freeze but they will be easy escapable against high-level player. Otherwise its a great move, it can open the opp for 50% combos sometimes and can be used even in corner traps. The Freeze is usefull move, but slow too. It can be very usefull to help you in corner so you can get the RH Inf.
Tak-Ground Freeze, Jabs-Ground Freeze, Normall Safe Freeze, Wake up Slides, good but not enough against top tiers.
Scorpion
Scorpion can be used both offensive and defensive. You can even use the RH-Teleport Punch-Spear trick if its timed well. The retalations are good usualy with aaHP.
The Air THrow is very usefull move, its explained well in UMK3 Character Guides, so i will not go into details about it in mk2. You can use the Teleport for escapes but not in corner of course. You can try stuff like jabs trap mixed with teleport punch, and spear then sometimes. Scorpion can be very dangerious in corner, thanks to his spear. He is one of the biggest threats to god tier mileena.
The f,d,b,lk move is completely useless, unless you use it as a last move.
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